Hey thanks for posting. I cannot find your previous post.
I like the results of your tests and they appear to be pretty accurate to what we have found in 100m tests, but keep in mind tha the true speed of a wetsuit cannot be determined by swimming 100 meters in a pool. All one-piece wetsuits will cause your stroke to deteriorate during the latter part of a long swim. This is not the case with the T1 models. So if there were a way to time yourself in the last 100m of a 200 meter swim in the T1 vs other wetsuits, then you would see a bigger disparity in the times. This is where the T1 really shines and this is where you want to put the focus of your purchase decision if you take this sport seriously.
As far as using the Bibjohn alone, again, this only works if the fit is snug to begin with.
The T1 Black Pearl Vest will be much cooler than the Pullover, and you may very well get the 3 seconds back.
By the way, did you notice how heavy those IM Stealths are compared to the T1?
Emilio De Soto II
Maker of triathlon clothing, T1 Wetsuits, & Saddle Seat Pads and AXS since 1990
emilio@desotosport.com http://www.desotosport.com